@misc{indiciae4bbf6fa36e01,
  title = {A recording bag-in-a-box spirometer.},
  author = {G Cumming},
  year = {1966},
  doi = {10.1152/jappl.1966.21.1.291},
  url = {https://pubmed.ncbi.nlm.nih.gov/5903927/},
  note = {Source identifier: 5903927}
}